Turbocharging dc5 enquiries..

[acz0190]

hi, iv recently decided to turbo charge my itr so far iv collected the main pieces for my kit and just had some other enquiries to take the next step. so far iv already purchased turbo manifold,cooler and external wastegate. i dont have a clue what recomended turbo to use to gain expected 250kw atw's i was told a t4 would lag and to use a t3 instead would that be big enough to give me the hp i want without any struggles?im looking to achieve more than 7psi found on standard kits hoping for atleast 12psi. i was planning to rebuild my head with gasket,crower stage 2 cams/valve springs tuned with hondata but was told due to a high compression ratio that itl fry my pistons is this true?am i able to achieve 250-300kw atw's using stock pistons?also id like to know where i could find any mechanic or custom aftermarket shops that could make/sell me custom intercooler pipes and a downpipe?
any help would be greately appreciated..

[saxman]

unfortunately by already purchasing the manifold, you've somewhat narrowed down what kind of turbos you can get. Without knowing what the manifold is set up for, it's hard to further advise on turbo selection.

Any good exhaust shop should be able to make a downpipe and intercooler pipes.

As for the power you can make, etc, I honestly don't have the knowledge of the k series motors to answer.

[BLKCRX]

The k20 engine on the DC5r responds very well to forced induction, even more so once you start doing planed head work like your taking about !! iv turbo’ed and supercharged quite a few, and my preference is turbo all the way ! although each and every turbo application we do we custom build and design the turbo around the end result, have a read of this article of mine and Adrian’s’

http://www.hondatech.com.au/forum/showthread.php?p=322#post322

The turbo of course does a little bit depend on your manifold flange, but even this can be changed if required… I personally only ever use and recommend Geoff from full-race’s manifolds there by far in my eyes the best ever period, and im not one for cutting any corners what so ever.

7 or 12psi is no problem with the standard engine although the weak part is more the rods than the pistons, but if your going to build your head id also suggest a bottom end rebuild. Tuning high compression and boost is a walk in the park if you know what your doing there’s plenty of people who can do custom intercooler and exhaust work for your, I personally like using 308 stainless for cooler piping, polished up just make sure the person can weld nicely with a TIG welder.

As for your dump pipe one word of advice !! go 3.5” or even bigger !!! as large as you can possibly fit.

250 to 300kw on a stock bottom end personally is much to tall of a task, maybe 220 – 250 if your lucky, that’s from my personally experience but power is all about the right combination, have one thing wrong and it could effect everything.

If you have any problems or questions call me on 0417 875 785 always willing to help or come down 2 one of my Melbourne workshops



Regards James

[acz0190]

thanks for ur answers guys, the turbo flange on the manifold is built for a t3 or t4 turbo..i was wondering what the costs of labour was for rebuilding the head, bottom block and turbo applications?suggesting all the parts have already been aquired.would it be wise to purchase american import pistons/rods?

[superR]

i currently in the process of buying wisco pistons for my turbo DC2 R.... ive heard they are quite good for turbo honda's... still looking for a good set of resoably priced rods though.

james

[Weq]

read building head and block - dont expect change from 5k-10k for the k20, depending on brand..

u already want more boost supeR?? lol!

[BLKCRX]

Unfortunately a turbo manifold is either a t3 or a t4, it physically can’t fit both types of exhaust hosing on it unless you use a adaptor plate, either way the turbo collection area wouldn’t be perfectly match for both flanges either, depending on the build quality.. so something doesn’t add up there.

Labor n costs for parts to build a engine / car comes down to how much you want to spend, you could spend 5k or 200k or even more. Although typically a install job of cam’s port n polish springs etc etc run’s way over 5k !!

Rods/Pistons/Cams ;) call me or come down to the workshop… there most certainly are skills and knowledge required to build a k20 engine correctly, I love tuning these little things ;) although the k24 is even better… once its modified correctly.

Regards James

[superR]

its addictive....
its not even finished tuning yet and i am already planning the next stage.
i have said it once and ill say it again, come to sydney BLKCRX!

[BLKCRX]

I am coming next week maybe… or very soon to tune the first Integra Type S… on and very cute brunette 26 yr old female friend of mine…;-)

And then I’m off to QLD last week of February to make a DVD regarding K20 Engines, and K20 Engine swaps with hybrid racing etc…. Oh and maybe also a blonde …

Regards James

[superR]

where are you tuning at ? at a work shop or street tuning?